DOM Electronics (Digital Optical Module) 1 WPFLElectronics PPMDOM ElectronicsF. Louis

2 Contents DOM description HV pmt base Signal collection boards Central Logic Board & components Instrumentation Optical Line Terminal Power Board

3 DOM description Sphere 17” diameter 31 x 3 ”Pmt (19 Lower &12 Upper) Contain Read out and Control/Command Electronics for pmt and instrumentation

4 DOM electronic description TDC

5 DOM internal description HV Pmt base Signal collection board Central Logic board Power conversion board Heat conductor

6 TDC Photomultiplier base

7 Adjustable HV ( V) Low power (4,5mW) Asic with pre-amplifier and discriminator Connection to the signal collection boards done by flexible PCB LVDS output signal

8 TDC Signal Collection boards

9 Signal collection boards Transfer signals from the PMT base to the Central Logic Board Provide and monitor power for individual PMT HV base

10 TDC Central Logic Board (CLB)

11 CLB () Interfaces Signal Collection Boards Power Conversion Board Connection to REAM Dimension: 15 cm x 15 cm Simulation view

12 CLB with main components Components on both sides

13 CLB – FPGA Mini module System On Chip (Hardware PPC) Virtex 5 Virtex 5 FX MB DDR2 SDRAM Memory 32 MB Flash Memory Ethernet transceiver 10/100/1000

14 CLB - Time Stamping Asic Scott V2

15 Submission the 3 rd December 2010 Return the 19 th March 2011 Tests all functionalities on SCOTTLAND board Tests of continuous acquisition on KOALA board with pmt LVDS signals : Differential inputs = DC connection with LVDS signal Low Power Discriminators & Low Power Outputs (200mW) New package : From CQFP (Scott V1) to QFP 128 CLB - Time Stamping Asic Scott V2

16 CLB - Time Stamping TDC Implemented in FPGA See Hervé presentation

17 TDC Instrumentation

18 Instrumentation Slow control I²C link Nano beacon control board (Daughter board) Compass / Tiltmeter sensors (Daughter board) Temperature sensors (located on the CLB) HV base 3” pmt configuration (across the Signal Collection boards) High rate SPI link (treated like pmt data) ADC (located on the CLB)for Piezo & Hydro preamp boards) Dedicated readout firmware/software or standard SPI link

19 TDC Optical line terminal

20 Optical Line terminal – Network interfaces Data Read out Control & Command shore DM laser R-EAM PIN CW laser CLB PIN GbE DOM On Shore Board OFM Optical domain

21 Optical Line terminal – Components link interfaces REAM component (Reflective Electro Absorption Modulator) High rate up stream Data link Pin / Photodiode Slow rate down stream link in broadcast mode

22 TDC Power conversion board

23 Power conversion board Convert the 12V from the break out box in different voltages for all the DOM electronics Prototype power conversion board